US Patent Application 20100056819 - Process for producing dispersible and conductive Nano Graphene Platelets from non-oxidized graphitic materials
InventorsUS Classes556/478, Silicon to carbon bond formed423/415.1, Oxygen containing564/321, Amino nitrogen bonded directly to the carbon568/34, Plural rings containing568/426, Processes568/309, Processes568/808, Polycyclo ring system570/143Preparing benzene ring containing compoundAttorney, Agent or FirmInternational ClassesC01B 31/02C07F 7/08 C07C 211/43 C07C 315/00 C07C 45/27 C07C 33/00 C07C 25/00 Abstract textThe present invention provides a process for producing nano graphene platelets (NGPs) that are both dispersible and electrically conducting. The process comprises: (a) preparing a pristine NGP material from a graphitic material; and (b) subjecting the pristine NGP material to an oxidation treatment to obtain the dispersible NGP material, wherein the NGP material has an oxygen content no greater than 25% by weight. Conductive NGPs can find applications in transparent electrodes for solar cells or flat panel displays, additives for battery and supercapacitor electrodes, conductive nanocomposite for electromagnetic wave interference (EMI) shielding and static charge dissipation, etc. |
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